Additional bus companies, listed as existing during 1930's, are mentioned in the WPA American Guide Series of state guidebooks.
Bob's Bus Line - existed in 1930's, served Natchez.
De Kalb & Western Transportation Co. - served Meridian, De Kalb, Philadelphia, Louisville.
Durant-Belzoni Bus Line - served Durant, Lexington, Tchula, Belzoni.
Liberto Bus Line - served Laurel, Ellisville.
Oliver Bus Lines - existed in 1930's, served Jackson.
Payne Bus Line - no further information.
Suburban Bus Line - no further information.
Thomas Bus Lines - existed in 1930's, served Jackson.
White Bus Lines - served McComb to Natchez.